Table 2 Histopathological diagnosis according to MacDonnell et al classification14
GCA with PVL, nā€Š=ā€Š29GCA without PVL, nā€Š=ā€Š362p Value/OR
Active arteritis with giant cells22 (76%)198 (54.7%)0.02
Active arteritis without giant cells3 (10%)49 (13.54%)
Healed arteritis1 (4%)1 (0.28%)
Arteriosclerosis3 (10%)111 (30.66%)
Normal artery03 (0.83%)
Positive TAB26 (89.6%)248 (59.1%)0.016
Negative TAB3 (10.4%)114 (40.9%)OR 3.98*
  • *95% CI 1.12 to 16.88.

  • OR, odds ratio; PVL, permanent visual loss; TAB, temporal artery biopsy.